Date registered: Jul 2019
Vehicle: 2008 GL450
Location: New York
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Quoted: 0 Post(s)
Airmatic problem, one air bag not inflating
2008 GL450 with 50k miles.
Symptom of the problem -- Its right rear air spring is not getting inflated so that corner is sitting low. While I can raise and lower car and 3 other air springs are all inflated, right rear air bag is soft to the touch, with no pressure at all inside.
So far have checked the following:
Air bag -- no it doesn't leak. Uninstalled it from car and pressure tested with a compressor. No leak at air hose connector (at least not a large one to cause air bag no inflating at all. Sprayed soupy water didn't see bubble, but with no pressure fed to this air bag this test probably doesn't mean anything.)
Compressor -- It works fine. I can raise and lower car ok, except right rear corner is hanging lower (with no pressure in that air bag)
Valve block -- it's brand new. Took car to an independent mechanics, he said valve block is bad so replaced w a new one from dealer.
After replacing valve block car still behaves the same. The mechanics said he just needs to recalibrate level sensor but haven't got around to it yet.
Does this make any sense? With car raised, right rear corner is sitting 3 inches lower than rest (again this is with zero pressure in the right rear air bag). How could calibration be possibly off by that much?
I am starting to double if this guy knows what he is doing.... any thoughts and advice would be greatly appreciated!